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Tool steel A2

Metal

Tool steel A2

AISI A2 | 1.2363

ProcessCNC Machining

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* Property values are for reference and may vary by alloy, temper, and processing conditions.

Tool Steel A2 is a medium-carbon, medium-chromium air-hardening cold work tool steel. It offers superior toughness and dimensional stability compared to D2, while maintaining good wear resistance and hardenability (slightly lower than D2). A2 is more suitable for cold work dies and cutting tools subjected to moderate impact loads, which require balanced performance and machining stability.

Material Properties

Mechanical Properties

  • Yield strength

    2200 - 2500 MPa

  • Tensile strength

    ~1700 - 2000 MPa

  • Elongation

    3 - 6 %

  • Hardness

    57 - 61 HRC

  • Young's modulus

    210 - 215 GPa

Thermal properties

  • Maximum operating temperature

    400 - 450 °C

  • Thermal conductivity

    25 - 30 W/(m·K)

  • Coefficient of thermal expansion

    10.8 - 11.2 μm/(m·°C)

Physical Properties

  • Density

    7.75 g/cm³

Electrical properties

  • Electrical resistivity

    45 - 55 μΩ·cm

Manufacturability

  • Manufacturability-Corrosion resistance

    Fair

  • Manufacturability-Weldability

    Poor

Shenzhen

Building A, Jinsheng Finance Building, No. 217 Nanhuan Road, Bao'an District.

Hong Kong

MAKE DIRECT HOLDINGS LIMITED Unit 1111, 11/F, Hollywood Plaza, 610 Nathan Road, Mong Kok, Kowloon, Hong Kong